The management of the team is fine, but nothing of that would make sense without the most exciting part of Formula Manager: the races! Here you'll be able to see the real performance of your car or to keep track of the driving level of your drivers.
A good way to measure the different setup of the car is making trainings prior to the race. You'll be able to make your tests without anyone causing you any trouble and drawing your own conclusions. You have a limited number of trainings available per driver along the week, use them wisely. This does not apply to the test circuit, where the trainings are unlimited.
As your driver is not competing, he'll be able to focus more in the driving of the car, so he'll be able to improve his skills. Choose, in the setup of the driver, if you prefer him to focus on improving the technique or the accuracy, or a mixture of both.
Also, if the driver detects any possible improvements in the settings you have used for the car, he can give you some advices. It may be a good idea to listen to him, especially if he is an experienced driver.
It determines the starting position in the race. It's very important to calculate correctly the tuning to make the most of your car.
The race is generated taking into account the values of the parts of the car and the skills of the driver, all what you see will happen for a reason! Analyse consciously each one of the movements to identify your strengths and learn fromn your mistakes. Try to predict when will your rivals make the pit stops to take advantage from it. Watch out the weather forecast of your engineerings.
All of this will let you take founded decisions at the time of managing your team, rather than randomly.